/*
 * Licensed to Elasticsearch B.V. under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch B.V. licenses this file to you under
 * the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import React, { ButtonHTMLAttributes, forwardRef, useMemo } from 'react';
import classNames from 'classnames';

import { CommonProps } from '../common';

import { getChromaColor } from './utils';

export type EuiColorPickerSwatchProps = CommonProps &
  Omit<ButtonHTMLAttributes<HTMLButtonElement>, 'color'> & {
    color?: string;
  };

export const EuiColorPickerSwatch = forwardRef<
  HTMLButtonElement,
  EuiColorPickerSwatchProps
>(({ className, color, style, ...rest }, ref) => {
  const classes = classNames('euiColorPickerSwatch', className);
  const chromaColor = useMemo(() => getChromaColor(color, true), [color]);
  const background = useMemo(
    () => (chromaColor ? chromaColor.css() : 'transparent'),
    [chromaColor]
  );

  return (
    <button
      type="button"
      className={classes}
      style={{
        background,
        ...style,
      }}
      ref={ref}
      {...rest}
    />
  );
});

EuiColorPickerSwatch.displayName = 'EuiColorPickerSwatch';
